Mozilla Firefox ESR < 52.5.2 Private Mode Fingerprinting Vulnerability (macOS)

Medium Nessus Plugin ID 105211


A web browser installed on the remote macOS or Mac OS X host is affected by a security bypass vulnerability.


The version of Mozilla Firefox ESR installed on the remote macOS or Mac OS X host is prior to 52.5.2. It is, therefore, affected by a flaw related to handling Private Mode, web workers, and IndexedDB access that allows an attacker to cause persistent data to exist that can uniquely fingerprint a user.


Upgrade to Mozilla Firefox ESR version 52.5.2 or later.

See Also

Plugin Details

Severity: Medium

ID: 105211

File Name: macosx_firefox_52_5_2_esr.nasl

Version: 1.4

Type: local

Agent: macosx

Published: 2017/12/13

Modified: 2018/07/14

Dependencies: 55417

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: MacOSX/Firefox/Version

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/12/07

Vulnerability Publication Date: 2017/12/05

Reference Information

CVE: CVE-2017-7843

BID: 102112

MFSA: 2017-28